table {
	border:1px red solid;
	width: 800px;
}
#table_head {
    background-color: green;
    height: 100px;
}

th p {
    /*margin: 10px;	*/
    height: 50px;
    border-right: white 0.5px solid;
    line-height: 40px
    font-size:12px;
    font-family: "黑体"
    /*display: table;*/
}
th:nth-of-type(2) p{
	width: 60px;
	line-height: 25px;
}
th:nth-of-type(3) p{
	width: 80px;
	line-height: 25px;
}
tr:nth-child(odd){
	background-color: red;
}
tr:nth-child(even){
	background-color: blue;
}
.buy {
    border-radius: 3px;
    background-color: orange;
    width: 45px;
    height: 20px;
}

.presell {
    border-radius: 3px;
    background-color: blue;
    width: 45px;
    height: 20px;
}
